Consider the following intermediate chemical equations.(IMAGE) -205.7 kJ -113.4 kJ -14.3 kJ 78.0 kJ

Approximately .

Explanation:

This question can be solved using Hess's Law.

Start by considering: how can the first three reactions (with known values) be combined to produce the reaction ?

Here's one possible combination:

In other words, if , , and denote the three reactions with know values, respectively, then will give the required reaction .

By Hess's Law, the value of the reaction will thus be:

.

false

because it does not have the potential to be entirely used up

2b2t

explanation:

2b2t